aboutsummaryrefslogtreecommitdiff
path: root/tests/qemu-iotests/038
blob: 36125eab1e7e85eb4fddb6aa86a45226a9ef256a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#!/bin/bash
#
# Test COW from backing files with AIO
#
# Copyright (C) 2012 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

# creator
owner=kwolf@redhat.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!

_cleanup()
{
	_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

_supported_fmt qcow2 qed
_supported_proto generic
_supported_os Linux

CLUSTER_SIZE=2M
size=128M

echo
echo "== creating backing file for COW tests =="

_make_test_img $size

function backing_io()
{
    local offset=$1
    local sectors=$2
    local op=$3
    local pattern=0
    local cur_sec=0

    for i in $(seq 0 $((sectors - 1))); do
        cur_sec=$((offset / 65536 + i))
        pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))

        echo "$op -P $pattern $((cur_sec * 64))k 64k"
    done
}

backing_io 0 256 write | $QEMU_IO $TEST_IMG | _filter_qemu_io

mv $TEST_IMG $TEST_IMG.base

_make_test_img -b $TEST_IMG.base 6G

echo
echo "== Some concurrent requests touching the same cluster =="

function overlay_io()
{
    # Start with a request touching two clusters
    echo aio_write -P 0x80 2020k 80k

    # Then add some requests all over the place
    for i in $(seq 0 15; seq 17 31; seq 33 47); do
        echo aio_write -P $((0x81 + i)) $((i * 128))k 64k
    done

    # Then backwards overwriting part of them
    for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do
        echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k
    done

    # And finally crossing the next cluster boundary
    echo aio_write -P 0x90 4080k 80k
}

overlay_io | $QEMU_IO $TEST_IMG | _filter_qemu_io |\
	sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g'

echo
echo "== Verify image content =="

function verify_io()
{
    echo read -P 31 2016k 4k
    echo read -P 0x80 2020k 80k
    echo read -P 32 2100k 12k
    echo read -P 33 2112k 64k

    echo read -P 63 4064k 16k
    echo read -P 0x90 4080k 80k
    echo read -P 65 4160k 64k

    for i in $(seq 0 15; seq 17 31; seq 33 47); do
        echo read -P $((0x81 + i)) $((i * 128))k 96k
    done

    for i in $(seq 0 14; seq 16 30; seq 32 47); do
        local cur_sec=$(( i * 2 + 1 ))
        local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))

        echo read -P $pattern $((i * 128 + 96))k 32k
    done
}

verify_io | $QEMU_IO $TEST_IMG | _filter_qemu_io

_check_test_img

# success, all done
echo "*** done"
rm -f $seq.full
status=0